- The Short Answer: What the Letters Stand For
- Parsing the Name Word by Word
- Who Runs the Exam and Who Licenses You
- The Five Content Areas Behind the Name
- What the Exam Actually Looks Like
- Fees, Registration and Scheduling Mechanics
- Who Sits for It and Where They Work
- What the Published Pass-Rate Data Says
- Sequencing Your Preparation by Domain
- Frequently Asked Questions
- PE-A&BE means Principles and Practice of Engineering, Agricultural and Biological Engineering, a licensure exam from NCEES.
- The exam has 85 questions, 8 hours 30 minutes of answering time, and is offered once yearly by computer.
- Common System Applications carries the largest question range: 19 to 29 questions.
- The NCEES exam fee is $400 per attempt; your licensing board may charge separately.
The Short Answer: What the Letters Stand For
PE-A&BE stands for Principles and Practice of Engineering, Agricultural and Biological Engineering. It is the discipline-specific examination that engineers take on the path to a Professional Engineer (PE) license in the agricultural and biological engineering field. The "PE" in the label refers to the Principles and Practice of Engineering exam series, and "A&BE" narrows it to one discipline within that series.
On this site, the abbreviation always refers to that single exam. It is the NCEES agricultural and biological engineering examination, not a different engineering discipline and not any other credential that happens to share similar letters. If you want a broader orientation after this article, our explainers on what PE-A&BE is and the PE-A&BE meaning cover the same ground from different angles.
Parsing the Name Word by Word
The full name is a mouthful, but each part does real work. Understanding it clarifies what the exam is and is not.
Principles and Practice of Engineering
This is the NCEES name for the professional-level licensing exam series. The earlier step in the licensure path is the Fundamentals of Engineering exam, which tests foundational knowledge close to graduation. The Principles and Practice exam, by contrast, is designed for engineers who already have significant work experience. NCEES describes the exam as designed for engineers with at least four years of post-college experience, though that is a design target and not a universal admission rule. Your state or territory licensing board sets the actual eligibility requirements, which is why our PE-A&BE requirements guide tells you to check with your board first.
Agricultural and Biological Engineering
This is the discipline designation. The exam draws on engineering applied to food, fiber, water, soil, biological materials, farm and processing machinery, structures, and the environment around them. That breadth is why the exam is organized into five distinct content areas instead of a single technical core.
Who Runs the Exam and Who Licenses You
Two separate organizations are involved, and mixing them up is a common source of confusion.
- NCEES (National Council of Examiners for Engineering and Surveying) writes and administers the exam, sets the specifications, and handles scoring.
- Pearson VUE is the testing provider that delivers the computer-based exam at in-person test centers.
- Your state or territory licensing board decides whether you are eligible, approves your application, and issues and renews the actual PE license.
That last point deserves emphasis. A PE license and its continuing-education maintenance are administered by licensing boards. There is no separately renewable national NCEES certification attached to passing this exam. You follow your selected board's approval and registration process before booking a seat. For context on how licensure fits into the profession, the Bureau of Labor Statistics maintains an Occupational Outlook Handbook entry on agricultural engineers. For our own take on the credential's career value, see PE-A&BE certification and whether it is worth it.
The Five Content Areas Behind the Name
NCEES organizes the exam into five topic headings. Rather than publishing percentage weights, it publishes question ranges. Those ranges tell you roughly how much of the exam each area occupies, but they are not exact counts for any single test, and subsidiary knowledge areas listed in the specifications are neither exclusive nor exhaustive.
| Content Area | Question Range |
|---|---|
| Common System Applications | 19 to 29 |
| Natural Resources and Environmental Systems | 15 to 23 |
| Processing Systems | 12 to 18 |
| Facilities and Structures | 12 to 18 |
| Machinery Systems | 12 to 18 |
The official exam-objective source is the NCEES specifications document for the Agricultural and Biological Engineering CBT exam. Its content is effective October 1, 2023, with the referenced standards list effective October 1, 2025. Our complete guide to all five content areas goes deeper into each one.
Common System Applications
The largest allocation, and the area most likely to reward broad preparation. It covers the cross-cutting engineering knowledge that applies no matter which specialty you work in.
- Expect a wide spread of topics instead of one deep technical niche.
- The 19 to 29 question range means a large share of your score rides here.
- Treat it as foundational even if your day job is narrower.
Natural Resources and Environmental Systems
The second-largest range. This area reflects the field's connection to land, water, and the environment.
- Candidates from water-resources or environmental backgrounds usually start strong here.
- Candidates from machinery or processing backgrounds should budget extra review time.
Processing Systems, Facilities and Structures, Machinery Systems
Each of these three carries a 12 to 18 question range, so they are weighted equally in the published ranges.
- Processing Systems: engineering of handling and processing biological materials.
- Facilities and Structures: design-oriented problems about buildings and agricultural structures.
- Machinery Systems: equipment and power-system problems.
What the Exam Actually Looks Like
Knowing the name is only useful if you also know what you will face on test day. The format facts below come from the NCEES Examinee Guide (May 2026).
- 85 questions with eight hours 30 minutes of answering time.
- The full appointment is nine hours 30 minutes, which includes a two-minute nondisclosure agreement, an eight-minute tutorial, and a 50-minute scheduled break.
- Question types include multiple-choice and alternative item types. An undisclosed number of questions are unscored pretest items, and NCEES does not publish how many.
- There is no partial credit and no deduction for wrong answers, so you should never leave an item blank.
- Both SI and U.S. customary units appear.
A Closed-Book, Supplied-Reference Exam
This is a closed-book exam. You may not bring personal reference copies. Instead, you use the supplied searchable electronic reference material and the specified standards. One NCEES-approved calculator is permitted. A subtle point: the standard revisions listed in the specifications govern scoring, even when newer editions of those standards exist. Practice with the listed editions, not whatever is newest.
For a quick-reference companion, see the PE-A&BE cheat sheet, and for how the format translates into difficulty, read how hard the exam really is.
Fees, Registration and Scheduling Mechanics
| Item | Detail |
|---|---|
| NCEES examination fee | $400 per attempt |
| Licensing-board application | Separate cost set by your board |
| Delivery | In-person computer-based testing via Pearson VUE |
| Frequency | Once yearly |
| Next published sitting | October 28, 2026 |
| Optional official practice exam e-book | $59.95 (85 questions with solutions, copyright 2023) |
The order of operations matters. Because boards control eligibility, you generally work through your board's approval and registration process first, and only then book your seat. Plan for the once-a-year cadence: missing a registration deadline can mean waiting a full year. Our guides on exam dates and scheduling and the complete cost breakdown walk through the timeline and budget.
Who Sits for It and Where They Work
Candidates are typically practicing engineers working in the broad agricultural and biological engineering space: equipment and machinery design, food and bioprocessing, water and soil resource management, environmental consulting, and structural or facility design for agricultural operations. Employers include equipment manufacturers, processing companies, consulting firms, public agencies, and universities. Holding a PE license is often valued where engineering work must be signed off or where public-facing responsibility is involved.
Pay varies by employer, region, and experience, and we avoid quoting figures we cannot source here. For a data-oriented look, see the salary guide and the PE-A&BE jobs overview.
What the Published Pass-Rate Data Says
NCEES publishes an official pass-rate table, most recently updated in January 2026. It reports 91% for 33 first-time examinees and 100% for one repeat examinee. Two cautions apply. First, these are very small cohorts, so a single candidate swings the percentage dramatically. Second, they are results from past sittings, not predictions for the October 2026 exam.
NCEES also does not publish a fixed passing score or impose a predetermined pass rate. Pass/fail decisions use a psychometrically established scaled competency standard, meaning your result reflects whether you met a defined level of competence, not where you rank against other candidates. For more, see the pass rate analysis and the passing score explainer.
Key Takeaway
Do not treat the 91% figure as a promise of an easy exam. It comes from a tiny group of 33 first-time takers, and the passing standard is competency-based. Prepare as if the bar is fixed and demanding.
Sequencing Your Preparation by Domain
Because the exam spans five distinct areas, the most useful planning question is not "how many hours" but "which domain first." A sensible order follows the question ranges and your own gaps.
Common System Applications
- Start with the largest range, 19 to 29 questions.
- Build breadth first; these topics support the other four areas.
Your Weakest Two Areas
- Check where your daily work gives you the least exposure.
- Natural Resources and Environmental Systems is the next-largest range at 15 to 23.
Processing, Structures, Machinery, Then Full Practice
- Each of these three holds 12 to 18 questions; review whichever is furthest from your experience.
- Finish with timed sets in the electronic-reference environment.
The optional official NCEES practice exam e-book offers 85 practice questions with solutions, and ASABE's PE exam resources page provides preparation guidance and member mentoring. Neither replaces the NCEES specifications. For a full plan, see the PE-A&BE study guide, and when you want exam-style repetition, try the practice tests on our main site or browse training options.
Frequently Asked Questions
It stands for Principles and Practice of Engineering, Agricultural and Biological Engineering. It is the NCEES licensure exam for that discipline, administered by computer through Pearson VUE.
It is an exam. Passing it is one step toward a PE license, which your state or territory licensing board issues and maintains. There is no separate renewable national NCEES certification.
There are 85 questions with eight hours 30 minutes of answering time. The full appointment is nine hours 30 minutes, including a nondisclosure agreement, a tutorial, and a 50-minute scheduled break.
The NCEES examination fee is $400 per attempt. Your licensing board's application costs may be separate, so check with your board before budgeting.
In-person computer-based testing is offered once yearly. The next published sitting is October 28, 2026. Confirm current details on the official NCEES exam page and with your licensing board.
Searching for the letters "PE-A&BE" usually means you are trying to size up the exam before committing. The short version: it is a once-a-year, 85-question, closed-book professional licensure exam in agricultural and biological engineering, built around five content areas and governed by the specifications NCEES publishes. Start with those specifications, confirm requirements with your licensing board, and then build your plan around the domain with the largest question range.